Powder sprayer



mev n2, w23. Mw-3m H. E. HERBERT POWDER SPRAYER Filedkoct. 1, 192i lenwfv E. Herben,

Patented @lune l2, w23..

' 'narran stares HENRY E. HERBERT,

F MARTIN, MICHIGAN, ASSIGNOR F ONE-HALF T0 JANS M. HERBERT, OF MARTIN, MICHIGAN.

POWDER srEaYEE.

Application -led October 1,

To all whom t may Gomera.' v

Be it known that I, HENRY E. HERBERT, a citizen of the United States, residing at Martin, in the .county of Allegan and State of Michigan, have invented certain new and useful Improvements in Powder Sprayers, of which the following is a' specification.

My invention relates to improvements in implements for spraying shrubbery &c. with 110 insecticide powders, and its objects are: First, to provide an implement of the kind named with which powder may be evenly and forcibly sprayed until the same is wholly exhaustedfrom the chamber of the implement; second, to provide a means to avert the danger of packing the powder in the chamber of the implement, and, third, to provide a means whereby the danger of discharging the 1powder in unnecessarily large quantities, wi be obviated.

I'attain these objects -by the construction shown in the accompanying drawing, in which Fig. 1 is a sectlonal elevation of the implement showing its internal construction,

and Fig. 2 is an elevation of the same practically as it should appear, minus the air forcin element.

vSimlla'r reference numerals indicate 'similar parts throughout the several views.

'fer that the chamber 1 be made in the form of an inverted cone, with a large direct opening downwardly into the barrel 7. In the bottom of the chamber 1, I place a' fine wire screen, preferably a very ne strainer screen, as shown at 3, which is so arranged that there is a small space or air assage below the screen 3, so that air forci ly passed into the ipe 4 'at the extreme end thereof, as inet dicated by the arrow at the left of Fig. 1, may have a chance to form a' strong current through the pipe 5 and below the screen 3, so said air current will gradually draw the powder through the meshes of the screen ce without danger of ackin it therein, as would be the case without t is passage-way, thus kee `ing the powder in the chamber loose an easily removable at all times, no matter how forcibly the air may be made to ce pass through the' plpes 4 5.

I nd it a great advantage to make the inte pipe t considerably smaller than the In the construction of thissprayer I pre# 1921. Serial No. 504,723.

outflow pipe 5, as by this means a very strong current of air forced through the pipe 4 will form an 'eddy at the end of the pipe 5 immediately below the screen 3 that will keep the powder in the screen loose and constantly agitated, for some distance up into the contalning chamber 1 andwill insure an even and steady delivery of powder into and through the pipe 5.

In order to get satisfactory this implement it-is necessary to make it as nearly air tight as is possible, especially at the top, and for this purpose I place an air tight cover, 2, upon it, with the opening beneath it of sufficient size to render it easy to refill the chamber whenever necessary, the cover 2 being readily removable, when desired.

In Fig. 1, 6 represents the powder within the containing chamber 1, and it will be noted that it appears to be much thinner and more fluffy in the center at the top than it is at the sides and below. This result is produced by the action of the air eddies below the screen 3 as the resistance of the air and -powder passing forcibly through the pipe 5 causes apressure upwardly through the powder and keeps it loose and fluffy, thus avertin the danger of its becoming packed in the ottom of the screen, or elsewhere in the chamber 1."

I-Iavin thus fully described my invention, what I c aim as new in the art, is:

In an implement for spraying powder, a conical containing chamber having a close fitting cover results from thereon, sald chamber opening at right angles into a large outflow pipe, a small air inflow pipe entering the end of the outflow pipe longitudinally thereof near the line of connection between the lower end of the container with the end of the outflow pipe; in combination with a. screen extending well down into the outflow pipe and so covering the end of the container within the outflow pipe as to form a narrow/crescent formed passage way between the screen and the wall of the outflow pipe for the passage of a part of the air current below the screen.

Signed at Martin Michigan, September 2t, 1921.

HENRY E. HEEEEEE, 

